Bethlehem police are investigating an armed robbery and attempted hold-up on Stefko Boulevard

Bethlehem police said two girls were robbed at gunpoint Thursday night by two men wearing masks.

The same men —dressed in dark clothing and wearing gloves — may also have tried to rob a man about 25 minutes later, but police said he argued with the men and they left empty-handed.

The robbery happened around 11:30 p.m. at Stefko Boulevard and Easton Avenue, Bethlehem police Lt. Jeff Herzog said. He said two girls were walking in the area when the men came up to them and demanded their backpacks.

Police said both men had handguns, although the unidentified girls were not injured. The men took the backpacks and ran and as officers combed the area, they "recovered property related to the robbery," Herzog said. He would not specify what was found.

As officers were in the area, they were approached by a man who told police two men had tried to rob him in the 1800 block of Stefko Boulevard, police said.

The men in the attempted robbery matched the girls' description, police said. Both were wearing dark clothes and masks, although the man in the attempted robbery said he saw only one gun, police said.

The man argued with the robbers and they left without taking anything, police said. No one was injured during either incident, police said.